Metal-working machine.



W. REYNOLDS.

METAL WORKING MACHINE.

APPLICATION FILED 0U. 28, 1913.

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METAL WORKING MACHINE. APPLICATION FILED OCT- 28. 1913.

Patented Feb. 1, 1916.

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a cum 1 H8 02 T C o ND MAM O -bl N W0 l M C l n P A Patented Feb. 1, 1916.

3 SHEETSSHEET 3- STAES an V -WILL1TA1VI REYNOLDS, OF PATERSON, NEW JERSEY, ASSIGNOR TO FITCHBURG- MACHINE WORKS, OF FITCHBURG', MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

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METAL-WORKING MACHINE.

i Specification of Letters Patent.

Patented Feb. 1, 1916.

To all whom it may concern Be-it known that I, WILLIAM REYNOLDS, a citizen of the United States, and resident of Paterson, in the county of Passalc and State of New Jersey, have invented certain new and useful Improvements in Metal-VVorklng Machines, of which the following is a specification.

This invention relates to metal-working machines, and one feature of it is the combination with a sliding carriage of a tool slide mounted thereon and transmission mechanism mounted on the carriage for feeding said tool slide.

Another feature is a device adapted to be mounted on the carriage and driven by said transmission mechanism for turning screwthreads on rotating stock.

Other features are hereinafter described, and illustrated by the accompanying drawings, of which Figure '1 represents a front elevation, partly in section, of a portion of the frame of a well-known metal-working machine. The figure includes a feed carriage, a tool slide movably'mounted thereon, and transmission mechanism mounted upon the carriage and driven by the feed shaft for moving said tool slide relatively to the carriage.

Fig. 2 represents a left-end elevation of the 'mechanism shown by Fig. 1, the frame of the machine being shown in vertical cross section. F1g. 3 represents a sectlon on a larger scale through the transmission gearing in the plane indicated by line 3-3 of Fig; 2. Fig. & represents a section through the same gearing in the plane indicated by line 1 l of Fig-3. Fig. 5 represents a top plan view of the feed slide which is shown in Figs. 1 and 2, as being mounted upon the main carriage. Fig. '6 is a top plan view of a tool slide adaptedto be mounted in the feed slide shown by Fig. 5. Fig. 7 is an elevation, partly in section, of the tool slide.

See line 7-7 of Fig. 6. Fig. 8 is a vertical cross section through the tool slide in the plane indicated in the line 88 of Fig. 7.

Fig. 9 is an elevation, partly broken away,-

of a manually operative device by which the tool is moved to and from operative position, and by which the feed mechanism is con- Fig. 10 is a section of the structure intersected by line 1010 ofFig. 9. Fig. 11 is a vertical secv.tion through the slides which are arranged one upon another. '(See line 11-11 of Fig. 5).

The same reference characters indicate the same parts wherever they occur.

The operating mechanism is mounted upon the usual feed carriage of a lathe of well-known construction and operation. The frame of such lathe is indicated 2113-20, and the main carriage is indicated at 21, the frame being provided with a flange 22 by which the feeding movement of the carriage is guided.

The usual feed shaft is indicated at 23, the same being provided with a keyway, as shown by Fig. 2, for sliding engagement with suitable well-known feed gearing mounted upon the carriage 21. This feed gearing includes a pinion 24 which engages a rack 25 affixed to the frame 20, and is adapted to be connected and disconnected between the feed shaft 23 and feed pinion 24: by a controller 26 in the well-known manner. l/Vhen the machine is to be used for cutting a thread, the feed gearing will remain disconnected, and the carriage 21will be secured rigidly with relation to the frame 20 by the usual clamp, not shown.

The carriage 21 is provided with a gear case 30 whichcontains gearing for transmitting rotation from the shaft 23 to a horizontal shaft 31. As shown by Figs. 1, 2 and 5, the shaft 31 carries a lead-screw or worm 32' which is for the purpose of feeding a thread-cutter 33. The shaft 31 is provided with a spline groove 34 for sliding connection with the lead-screw 32.

The gear case 30 contains a shaft 35 to which rotation is transmitted by a shaft 36. A helical gear 37 aflixed to the lower end of the shaft 36 engages a helical gear 38 splined upon the feed shaft 23. The gear 38 is suit ably connected to the carriage 21 for the purpose of causing it to slide along the shaft 23 when the carria e isshifted, the desired driving connection between the shaft andthe sliding gear being maintained by a suitable key (not shown) which occupies the groove in the shaft. Spur gears 39 and 40 transmit rotation from the upper end of the shaft 36 to the lower end of the shaft 35. The shaft 35 is provided with suitable clutch mechanism whereby the shaft 31 may be driven in either direction or entirely disconnected.

This clutch mechanism comprises miter rotation to either of the gears. A shipper 4:6

is provided for shifting the clutch sleeve to the desired position. This shipper is aiiixed to a rockshaft 57 which extends through the gear case and is provided with a hand lever 18. A locking pin 19 carried by the lever is adapted to enter sockets such as that indicated at 50 in Fig. 1, the gear case being provided with three such sockets,,one for holding the clutch sleeve in one driving position, one for holding the clutch sleeve in its other driving position, and an intermediate socket for holding the clutch sleeve in its neutral position. As shown by Fig. e, the pin 49 is in the socket corresponding toneutral position. As shown by Fig. 4:, the lever 48 contains a helical spring 51, this spring acting upon the pin 4C9 to hold the latter in the socket. The outer end of the pin is provided with a knob 52, whereby the pin may be withdrawn from the socket and whereby the lever may be operated to shift the clutch sleeve.

The gears ski and 42 are constantly intermeshed with a gear 53 atlixed to the shaft 31. By means of the clutch mechanism just described, the shaft 31 may be caused to rotate in one direction or the other, while the feed shaft 23 continues to rotate always in one direction. The carriage 21 is'provided with.

a dovetail rib upon which is mounted a main slide 5%., and this slide is provided with a dovetail rib upon which is mounted a second slide 55 which for convenience is hereinafter called the reed slide. the slide 54 is provided with screws 21 which are adapted to engage the carriage 21 and bind the slide securely to the carriage. (See Figs. 2 and 5). The slide is also provided with screws 56 whose heads serve as stops for limiting the movement of the slide 55 relatively to the slide 54. Both of these slides have countersunk recesses for the heads of said screws, thus avoiding longitudinal projecting of the heads and enabling theiends of slide 55 to move fully to, the ends of slide 54. The said recesses are indicated at 56 in Figs. 5 and 11. The feed slide 55 is provided with a dovetail recess" 57 (Fig. for the reception of a cross-feed slide 58. This cross-feed slide is provided with a cylindric socket 59 for the reception of the cylindric shank 60 of a tool holder 61.

As shown by Figs. 2, 6 and 7, the threadcutter 33 is aflixed to the holder 61 by a screw -which is a handle 67.

62' The socket 59 is split, as shown by Fig. 8, and is provided with clamping screws 68 whereby it may be set up tightly to bind upon the shank 60. \Vhen the screws are loosened, the holder 61 may be turned about the axis of its shank to,tilt the cutter 33 to an angle coincident with the lead of the thread being out. A piece of bar stock 00 is shown in Figs. 2, 6 and 7, in coiiperative relation to the cutter. It will be understood that the stock will be mounted upon the usual head-stock and tail-stock of the lathe and rotated by the former in the usual manner.

In practice, the cutter holder will be tilted according to whether the thread to be cut is of right-hand or left-hand pitch; and the angle at which the cutter holder is set will be determined according to the lead of the thread which is to be cut. As an index for indicating approximately the desired position oi the cutter holder, the shank 60 (see Figs. 7 and 8) is provided with a pointer 64 at its forward end, and the slide 58 is provided with suitable narks (i-l" with which the pointer cooperates. The index may include as many marks as desired, although but three are shown by Fig. 8, the intermediate mark corresponding to an upright position of the cutter, while the upper and lower marks indicate respectively the desired a djustments for left-hand and right-hand lead. The depth of the cut into the. stock a? is varied by shifting the slide 58 relatively to the slide 55. A hand lever is provided for so moving the slide 58. The details of this hand lever areshown best by Figs. 9 and 10. I The main body of the lever is indicated at 65.

It is formed with a screw-threaded socket for a screw-shaft 66 at the upper end of. The fulcrum of the lever is indicated at 68 in Figs. 2 and 5, the same being carried by the feed slide 55. c

The lever has an extension 69 at its lower end, and in this extension is mounted a shank 70 formed upon a nut or follower 71 which is adapted to coact. with the leadscrew 32 as shown by Figs. 1 and 2. The lever is connected with the. cross feed slide by suitable adjustable connections 'which i nelude a two-armed lever-72 and links73, and 7 1-. The lever 72 is mountedupon a fulcrum 75 which is carried by the feed slide 55. One end of the link 7 3 is pivotally connected to the lever 72, and the other end of the link is pivotally connected to a sliding'block 76 at the lower end of the screw-shaft 66.. The lever is provided with suitable guides-77- for the block, and the lower end of the screw-shaft66 is provided with ahead 78 which occupies a suitably formed: socket in the block whereby the screw-shaft is left free to rotate relatively to the block and whereby the block is. adjusted; relatively to the lever by longitudinal movement of the screw-shaft. The downward movement of the screw-shaft is limited by a stop comprising nut 17 9 and sleeve 80.; The sleeve 80 is'loosely mounted on the smooth stem of the screw-shaft. The nut 79 is screwed upon the adjustment'of 79 and 80, and a setscrew 91 carried by the-sleeve 80 'may be used to secure the stopto the screw-shaftif desired, but it is not necessary "that the stop-turn with the screw-shaft. A pin 81 carried by 80 cooperates with a scale 92 of marks on the nut 79.

The link 7 1 is pivotally connected by .a screw 82 with an adjustable block. 83 mounted in guides formed upon the tool slide 58. The tool slide is provided with an ear 84 which is bored andtapped for the reception of an adjusting screw 85. As shown by Fig. 7, one end of this adjusting screw engages the sliding block 83 -to adjust the latter relatively to the slide. When the screw 82 is set up tightly it binds; the sliding block relatively to the slide. o I a As shown by Fig. 2, the lever 65 is against an adjustable stop-screw 86. This stopscrew is carried by a bracket-87 affixed to the feed slide 55, which slide carries the lever in question In practice, this stopscrew 86 will be adjusted to enable the nut or follower 71 to coact' accurately withthe lead-screw 32. When the desired adjustment has been found, this screw, willremain in one position for an indefinite time. .In

ordertoadjust the cutting tool 33 relatively to the stock 00, the screw 82 may be loosened and the adjusting screw 85 set at the desired position to locate the block 83 relatively to the tool slide. After the block 83 has been set at the desired position, the device is ready for use.

As shown by Figs. 1 and 2, the nut or follower 71 is in 'cotiperative' engagement with the lead-screw, and inorder to render the device operative itis only necessary to set the clutch lever 48:11; the desired positionto cause the lead-screw to rotate in the desired direction. Assuming that the clutch is connected so as to cause the feed slide to move from right to left in Fig. 1, the cutter'will move longitudinally of the-stock-w, the latter being rotated by its headstock. Vhile thrown out of engagement with the leadscrew when the feed slide has traversed its range of movement. The cam surfaces of the mainslide are indicated in Figs. land 5 at 88and 89, and the cooperative cam surfaces of the lever 65 are indicated at 88 and 89 in Figs. 1, 9 and 10. Referring now to Fig. 1, it will be seen that as the feed slide moves to the left the cam surface 88 will strike the cam surface 88. This will have the effect of swinging the lever, 65 in the direction lindicated by an arrow at the top of vFig. 2, and will disengage the nut 71 from the lead-screw and at the same time retract the cutter 33 from the stock. The feed slide is thus left free to be manually shifted to the right, so that the cutter may be caused to again traverse its range of movement. The attendant, without releasing his grasp 'upon the handle 67, may turn the same as much as desired before throwing the lever forward to the stop- 86 for the purpose of adjusting the sliding block 76 downwardly. Such adjustment will cause the cutter to cut more deeply into the stock when the lever 65 is again brought forward to the stop 86. As soon, as the lever is brought forward, the nut or; follower 71 again coacts with the lead-screw and the cutter is again caused to traverse its range of movement, at the end of which is will again be automatically retracted by the cam surfaces 88 and 88.

This operation may be repeated as many times as necessary, the cutter 33 being adjusted "toward the work after each cycle of operations until the thread has been cut to the depth for which 79 and 80 have been set.

The same devices are adapted to operate inthe reverse direction to cut a thread of opposite pitch, by changing but two-adjustments. One of these necessary adjustments is shifting the clutch lever 48 so as to re verse the direction of rotation of the leadscrew, and the other necessary adjustment is tilting the cutter. holder '61 to provide the necessary clearance asdetermined by the pitch and by the lead of the thread to be cut. When these 1 two adjustments have been made, the device is set in operation by placing the feed slide at the left so that it will, be fed from left to right. At the end-of its feeding movement the cam surface 89 of the lever 65 will engage the cam surface 89 of themain slide and the devices will be thrown out of operative position as hereinbefore explained. The attendant may then manually shift the feed slide 'back to the left and turn the handle 67 so as to cause the cutter to cut more deeply on the next operation;

- I claim: 3

1. A metal-working machine comprising a sliding carriage, a feed shaft therefor the axis of which is parallel to the path of said carriage, a tool slide movably mounted upon is i 'sa'id carriage to slide thereon 'in a line parallel to the path of said carriage, and

j-transmission mechanism "carried by said-oarriage "and arranged in sliding engagement with said shaft to be driven thereby for moving'said tool slide in said line relatively to "said carriage.

v '2.'A metal-working machine comprising a -sliding-carriage, a feed shaft thereforthe axis of which is parallel to the pathofsaid carriage, a tool slide movab'l'y mounted upon said carriage to slide thereon in' a line parallel to'the 'path of said carriage, aleadscrew or worm carried by said carriage,

means for coacting with said lead-screw or worm to mo'vesa'id tool slide in said line relatively to said carriage, and transmission mjechanismcarried by'said-carriage and arranged-in sliding enga'gement' with said shaft to be driven thereby for rotating said lead-screw or worm.

3. A metal-working machine comprising a slidin'g carriage,'a'supportslidably carried bysaid carriage,-a tool'slide carried by said su'p'port, means for securing said support in Val-1011s positions relatively to said carriage,

a shaft carried by said carriage, a leadscrew or worm having splined connection with said shaft and movable with said support along the length of said shaft, means for co'acti'ng with said lead-screw or Worm for moving said tool slide, transmission mechanism carried by said carriage for roslides, bothof said slides having countersunk recesses for said heads, said heads being flush with the ends of the slide which cai'riesthem. V

5. In a metal-working machine, a tool slide, a support therefor, a lead-screw or worm, means adapted to coact with said lead-screw or worm for movingrsaid slide, said means being arranged to beheld manually in Working position, and means for moving said coacting means from coactive relation with said lead-screw or worm in consequence of movement imparted by the latter to said slide.

6. In a metal-Working machine, a support, a feed slide mounted thereon, acrossfeed slide mounted onsaid feed slide, manually operative means carried by said feed slide for moving said cross-feed slide, mechanismrcarried by said support for =moving said feedslide, and means adapted to actuate said manually operative means to retract saidcross-feed slide'in consequence of relative movement of said feed slide upon said support. 7o

7. In a metal-Working machine, a support, a feed slidemounted thereon, acrossfeed slide'mounted on said feed slide,"man

ually operative means carried by said feed slide I011 moving cross feed slide rela-" V 'tively to said feed slide, a' lead-screwor warm for moving said feed slide, and a follower for coacting with saidlead}screw or worm, said follower being movable by said manually operative nieans,"to engage said so lead-screw or worm when said cross-feed V slide is moved tooperative position, and to disengage said lead-screw or worm'when said cross-feed slide is retracted from operative position. I

8. 111a metal-working machine,v.a support, a feed slide mounted thereon, a crossfeed slide mounted-on saidfeed'slide, imanuall yoperative means'carried by'sai'd feed. slide for movingisaid crossfeed slide rela- "9'0 'tively to said feed slide, a lead-screw or wo'rm'for moving said feed slide, a follower movable by said manually operative means to and fromcoactive engagement with said lead-screw or worm, and meansadaptedto '9-5 actuate said manually operative" means in consequence of feeding movement of'sa'id feed slide, to disengage-said follower from said lead-screw or worm and retract said cross-feed slide from operative position.-

'9; In a metalworking machine, a support, a feed" slide thereon, a cross-feed slide on said feed slide, an operating lever car- Jried by said feed slide for reciprocating said cross-feed slide, adjustable operating connections between said lever and said cross-feed slide for shifting the range of movement ofthe latter, an abutment carried by said feed slide for limiting the movement of said lever, a rotatable handle 1 carried 'bysaid' lever for actuating-the latter, and means operable by rotative movement of'said handle for adjusting said connections to shift the range of movement of said cross-feed slide.

10. A metal-working machine coi'nprising asliding carriage, a' main slide carried fthereby, a shaft carried by said carriage, means for driving said shaft, a feed slide carried by saidmain slide, a tool holder 1 carried by said feed slide, a lead-screw splined upon said shaft, said main slide having means for keeping said screw against relative endwise movement, and means carried by said feed slide for coacting with. said lead-screwito move said feed slide relatively to said main slide.

11. Anattachment for a lathe, compris ing a feed slide, a tool slide carried thereby,

said tool slide being arranged to slide at an angle to the movement of said feed slide, a lead-screw and follower for moving said feed slide, and manually operative means arranged to be movable for causing engagement and disengagement of said lead-screw and follower and otherwise movable for adjusting said tool slide relatively to said main slide to vary the depth of cut of the tool.

12. In a metal-working machine, a tool slide, a support therefor, a manually operative member carried by said support, means for transmitting movement from said member to said tool slide, a screw carried by said member for adjusting said means to vary the range of movement impartible by said manually operative member to said tool slide, and adjustable means for variably limiting the adjusting movement of said screw.

13. In a metal-working machine, a tool slide, a support therefor, a lever mounted on said support, means connecting said le- Copies of this patent may be obtained for five cents each, by addressing the ver and tool slide for transmitting movement from one to the other, said means including a screw carried by said lever and arranged to adjust said tool slide relatively to said lever to shift the range of movement impartible by said lever to said tool slide.

l i. In a metal-working machine, a tool slide, a support therefor, a lever mounted on said support, a screw arranged upon said lever to serve as an operating handle for swinging the lever, and connections for transmitting movement from said lever to said tool slide, said connections being adjustable by longitudinal movement of said screw to shift the range of movement impartible by said lever to said tool slide.

In testimony whereof I have afiixed my signature, in presence of two witnesses.

WILLIAM REYNOLDS.

Witnesses:

A. M. SMITH, ALBIN SMITH.

Commissioner of Patents,

Washington, D. G. 

